I'm not usually one for art, I don't typically understand it or find it interesting, but its terribly hard to do so when its so large! Cupid's Span was built in 2002 along the Embarcadero right by my house. The best part of this is that it looks slightly different depending on where you are standing.
Its more commonly known as the "bow and arrow" and located in Rincon Park. It was commissioned by Donald and Doris Fisher (founders of Gap, Inc.) and donated to the City of San Francisco.
More fun facts: Since San Francisco has the reputation as the "home port of Eros," artists Claes Oldenburg and Coosje van Bruggen decided to use Cupid's bow and arrow and created it to look like it was shot into the earth. It is made of stainless steel, structural carbon steel, fiber-reinforced plastic, cast epoxy, and polyvinyl chloride foam; then painted with polyester gelcoat.